The net FORCE on the dipole will be zero for a uniform field, non-zero for the non-uniform field. The direction of the force in a non-uniform field will be in the direction of the stronger field.
What is the net force on dipole in non uniform electric field?
When an electric dipole is placed in a non uniform electric the net force on the dipole due to the electric field will be non-zero as well as the torques it experiences in the field will be non-zero.
What happens to a dipole in a non uniform electric field?
If an electric dipole is placed in a nonuniform electric field, then the positive and the negative charges of the dipole will experience a net force. And as one end of the dipole is experiencing a force in one direction and the other end in the opposite direction, so the dipole will have a net torque also.
What happens if the electric field is non uniform?
➡️Torque is non zero when dipole is placed in uniform as well as non uniform electric field but in non-uniform electric field, dipole will experience net force of attraction whereas in uniform magnetic field, it doesn’t.
What is the force on a dipole?
Net force on a dipole is zero as both the charges are oppositely pulled.
What is a non-uniform electric field?
When magnitude and direction of electric intensity are not the same at all the points in the electric field, then it is called a non-uniform electric field.
Is it possible a dipole is placed in uniform electric field but it doesn’t rotate?
When a dipole is placed in a uniform electric field and dipole vector direction is not parallel to field direction, each chargs of dipole experiences a force. Magnitude of the two forces are equal but in opposite direction. … Hence in uniform field, dipole experiences only torque.
What would happen if the external field E is increasing parallel to P?
In the first case, the electric field is increasing parallel to ‘p‘. Thus that means the electric field on the positive charge will be larger than that on negative charge. Hence positive charge will experience more force than negative charge. … Hence negative charge will experience more force than positive charge.
When an electric dipole is held at an angle?
Answer: the forces experienced by the 2 charges constituting the electric dipole when placed in an uniform external electric field are equal and opposite in nature, the net force on the dipole is zero. No torque act on the dipole when the moment of electric dipole is parallel to the electric field.
What would happen if the external electric field E is increasing?
If the external field E is increasing, the dipole moment P will have a net force acting towards the increasing field and when E is kept anti-parallel, the net dipole moment will have a force over the decreasing field. Explanation: When the electric field is not uniform, the net dipole moment will be zero.
Why do the electric field lines never cross each other?
Electric lines of force never intersect because, at the point of intersection, two tangents can be drawn to the two lines of force. This means two directions of the electric field at the point of intersection, which is not possible.
What happens when a dipole is placed in an electric field?
If a permanent dipole is placed in an external electric field, it results in a torque that aligns it with the external field. If a nonpolar atom (or molecule) is placed in an external field, it gains an induced dipole that is aligned with the external field.
How do you know if something has dipole-dipole forces?
You have a dipole moment when there is a difference in electronegativity between two atoms.
How do you know when there is a dipole-dipole force?
Dipole-Dipole Forces. Dipole-dipole forces are attractive forces between the positive end of one polar molecule and the negative end of another polar molecule. … The partially positive end of a polar molecule is attracted to the partially negative end of another.
What are examples of dipole-dipole forces?
Examples of Dipole-Dipole Interactions
Another example of a dipole–dipole interaction can be seen in hydrogen chloride (HCl): the relatively positive end of a polar molecule will attract the relatively negative end of another HCl molecule.